From f1a7dd0d2b37b75ea850b86c6b427058d13f45fd Mon Sep 17 00:00:00 2001
From: nprimo <primo.niccolo@gmail.com>
Date: Mon, 9 Jan 2023 18:18:11 +0000
Subject: [PATCH] feat(remake): add subject, tests and solution

---
 sh/tests/remake_test.sh          | 18 ++++++++
 sh/tests/solutions/remake.sh     | 26 ++++++++++++
 subjects/devops/remake/README.md | 73 ++++++++++++++++++++++++++++++++
 3 files changed, 117 insertions(+)
 create mode 100644 sh/tests/remake_test.sh
 create mode 100644 sh/tests/solutions/remake.sh
 create mode 100644 subjects/devops/remake/README.md

diff --git a/sh/tests/remake_test.sh b/sh/tests/remake_test.sh
new file mode 100644
index 000000000..e707468e9
--- /dev/null
+++ b/sh/tests/remake_test.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+IFS='
+'
+
+challenge () {
+    if [[ $# -eq 1 ]]; then
+        submitted=$(bash student/remake.sh "$1")
+        expected=$(bash solutions/remake.sh "$1"-expected)
+        diff <(echo $submitted) <(echo $expected)
+        diff <(ls -ltr $1) <(ls -ltr $1-expected)
+    else
+        diff <(bash student/remake.sh "$@") <(bash solutions/remake.sh "$@")
+    fi
+}
+
+challenge a
+challenge 
diff --git a/sh/tests/solutions/remake.sh b/sh/tests/solutions/remake.sh
new file mode 100644
index 000000000..4460b92de
--- /dev/null
+++ b/sh/tests/solutions/remake.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+IFS='
+'
+
+if [[ $# -eq 1 ]]; then
+    mkdir -p $1
+    cd $1
+    touch -t 01010001 ciao
+    chmod 442 ciao
+    mkdir mamma
+    touch -t 01020001 mamma
+    chmod 777 mamma
+    touch -t 01030001 guarda
+    chmod 400 guarda
+    touch -t 01040001 come
+    chmod 642 come
+    mkdir mi
+    touch -t 01050001 mi
+    chmod 452 mi
+    touch -t 01060001 diverto
+    chmod 421 diverto
+else
+    echo Error
+    exit 1
+fi
diff --git a/subjects/devops/remake/README.md b/subjects/devops/remake/README.md
new file mode 100644
index 000000000..30550e82e
--- /dev/null
+++ b/subjects/devops/remake/README.md
@@ -0,0 +1,73 @@
+## remake
+
+### Instructions
+
+Create a file `remake.sh`, which will take one argument, the relative path of a directory, and will create new files and directories in it.
+
+If the number of given arguments is not one, your script should print `Error` and exit with the status code 1.
+
+Below the expected behavior of your script: 
+
+```console
+$  bash remake.sh given-path
+$  ls -ltr given-path 
+total 8
+-r--r---w- 1 nprimo nprimo    0 Jan  1 00:01 ciao 
+drwxrwxrwx 2 nprimo nprimo 4096 Jan  2 00:01 mamma
+-r-------- 1 nprimo nprimo    0 Jan  3 00:01 guarda
+-rw-r---w- 1 nprimo nprimo    0 Jan  4 00:01 come 
+dr--r-x-w- 2 nprimo nprimo 4096 Jan  5 00:01 mi
+-r---w---x 1 nprimo nprimo    0 Jan  6 00:01 diverto
+$ 
+```
+
+### Hints
+
+- `mkdir <relative-path>` command is used to create a new directory in the specified `<relative-path>`. For example:
+
+```console
+$  ls -l
+total 0
+-rw-rw-r-- 1 nprimo nprimo 0 Jan 12 14:26 a
+-rw-rw-r-- 1 nprimo nprimo 0 Jan 12 14:26 b
+-rw-rw-r-- 1 nprimo nprimo 0 Jan 12 14:26 c
+$  mkdir d
+$  ls -l 
+total 4
+-rw-rw-r-- 1 nprimo nprimo    0 Jan 12 14:26 a
+-rw-rw-r-- 1 nprimo nprimo    0 Jan 12 14:26 b
+-rw-rw-r-- 1 nprimo nprimo    0 Jan 12 14:26 c
+drwxrwxr-x 2 nprimo nprimo 4096 Jan 12 14:26 d
+$
+```
+
+- `touch <file-path>` command is used to change the modification and/or access time of the specified `<file-path>` to the current time. If the file does not exist yet, a new empty file is created at the specified `<file-path>`.
+
+The flag `-t` allow to specify the time in the format `[[CC]YY]MMDDhhmm[.ss]` instead of the current time.
+
+- `chmod` The chmod, or change mode, command allows an administrator to set or modify a file’s permissions. Every UNIX/Linux file has an owner user and an owner group attached to it, and every file has permissions associated with it. The permissions are as follows: read, write, or execute.
+
+This is what the default permissions looks like when you create a file.
+
+```console
+$ touch example.txt
+$ ls -l example.txt
+-rw-rw-r-- 1 user user 348 dez 13 15:31 example.txt
+$
+```
+
+This is what it looks like if you want to give permissions to read, write and execute to every group.
+
+```console
+$ chmod 777 example.txt
+$ ls -l example.txt
+-rwxrwxrwx 1 user user 348 dez 13 15:31 example.txt
+$
+```
+
+> You have to use Man or Google to know more about commands flags, in order to solve this exercise!
+> Google and Man will be your friends!
+
+### References
+
+- [Chmod](https://www.linode.com/docs/guides/modify-file-permissions-with-chmod/#modify-file-permissions-with-chmod)